Based on your understanding of investment returns, complete the following sentence:

If the amount to be received at the end of the investment period is the amount invested, the investment is said to have a positive investment return.

You gave $$770$ to your cousin. As a token of gratitude, your cousin gave you $$1,190$ at the end of the year instead of $$770.$ If you look at this as an investment, what is your annual rate of return?